Illinois Historical Language Spoken at Home Data
ACS 2010-2014 data
Total population: 12,868,747
| Illinois | % | U.S. | |
| English | 3,746,236 | 78.40%, see rank | 79.39% |
| Spanish | 528,991 | 11.07%, see rank | 11.75% |
| Other Indo-European Languages | 315,556 | 6.60%, see rank | 4.52% |
| Asian and Pacific Islander Languages | 141,013 | 2.95%, see rank | 3.36% |
| Other | 46,837 | 0.98%, see rank | 0.99% |
ACS 2008-2012 data
Total population: 12,823,860
| Illinois | % | U.S. | |
| English | 3,748,513 | 78.51%, see rank | 79.64% |
| Spanish | 524,425 | 10.98%, see rank | 11.57% |
| Other Indo-European Languages | 321,385 | 6.73%, see rank | 4.61% |
| Asian and Pacific Islander Languages | 135,475 | 2.84%, see rank | 3.24% |
| Other | 44,477 | 0.93%, see rank | 0.94% |
ACS 2006-2010 data
Total population: 12,745,359
| Illinois | % | U.S. | |
| English | 3,760,248 | 78.83%, see rank | 79.95% |
| Spanish | 518,155 | 10.86%, see rank | 11.42% |
| Other Indo-European Languages | 320,772 | 6.72%, see rank | 4.60% |
| Asian and Pacific Islander Languages | 130,199 | 2.73%, see rank | 3.14% |
| Other | 40,577 | 0.85%, see rank | 0.89% |
ACS 2005-2009 data
Total population: 12,785,043
| Illinois | % | U.S. | |
| English | 3,756,635 | 79.10%, see rank | 80.35% |
| Spanish | 507,198 | 10.68%, see rank | 11.21% |
| Other Indo-European Languages | 324,011 | 6.82%, see rank | 4.62% |
| Asian and Pacific Islander Languages | 122,574 | 2.58%, see rank | 2.95% |
| Other | 38,970 | 0.82%, see rank | 0.87% |
US Census 2000 data
Total population: 12,419,293
| Illinois | % | U.S. | |
| English | 3,689,910 | 80.34%, see rank | 81.14% |
| Spanish | 440,280 | 9.59%, see rank | 10.21% |
| Other Indo-European Languages | 324,324 | 7.06%, see rank | 5.22% |
| Asian and Pacific Islander Languages | 104,352 | 2.27%, see rank | 2.61% |
| Other | 33,874 | 0.74%, see rank | 0.82% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.